Question

What is the mass percent of salt in a solution that is made by dissolving $10g$ salt in $60g$ ${H_2}O$ ?

Answer 1

Mass percent is a method of expressing the composition of the solution mixture. It describes the amount of solute (grams) present in $100g$ of the solution.
Mass{\text{ % = }}\dfrac{{{\text{Mass of solute}}}}{{{\text{Mass of solution}}}} \times 100

Complete answer:
Given:
Mass of solute = Mass of salt $= 10g$
Mass of solvent =Mass of water $= 60g$
Mass of solution = mass of solute + mass of solvent
Mass of solution = $10g + 60g = 70g$
Substituting the given values in the above formula,
Mass{\text{ % = }}\dfrac{{{\text{Mass of solute}}}}{{{\text{Mass of solution}}}} \times 100
Mass Percentage $= \dfrac{{10g}}{{70g}} \times 100$
By simplifying we get,
Mass Percentage $= 14\%$
Hence, the mass percent of salt in a solution that is made is $14\%$ .

Additional Information:
An important analytical and forensic approach is determining the composition of a solution. When water is used to make a solution, it is referred to as aqueous, or containing water. The solvent is the major component of a solution, while the solute is the minor component that is dissolved. To make a solution, the solute is dissolved in the solvent.
In everyday life, as well as practically all biological systems, water is the most frequent solvent. Another liquid, such as acetone, ether, or an alcohol, can be used as a solvent in chemistry labs. The solute can be either a liquid or a solid, however this experiment only looks at solids.

Note:
The term "mass percent" is used to represent a concentration or to describe a component in a combination. The mass percentage of solute present in a given mass of solution can be used to characterise the solution composition. The amount of solute is measured in mass or moles.